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package mp3player;

public class Playlist {
    
    public-read var songs: Song[];
    public var currentPlayingSong: Song;
    
    public var currentSong: Integer = 0 on replace {
        
        if(sizeof songs > 0) { 
            if (currentSong < 0) {
                currentSong = sizeof songs-1;
            } else if (currentSong >= sizeof songs) {
                currentSong = 0;
            }
        }
    }
    
    public function clear() : Void {
        
        delete songs;

        if(currentPlayingSong != null) {
            currentPlayingSong.closeMedia();
            currentSong = -1;
        }
    }
    
    public function add(newSong : Song) {
        insert newSong into songs;
    }
}
